Flip SSL_SESSION fields to bool.

Change-Id: I0a3648437f78f37a4b710aaea73084a19be607c5
Reviewed-on: https://boringssl-review.googlesource.com/29485
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
diff --git a/ssl/internal.h b/ssl/internal.h
index 494b039..c6b849c 100644
--- a/ssl/internal.h
+++ b/ssl/internal.h
@@ -3303,22 +3303,22 @@
   uint8_t *early_alpn;
   size_t early_alpn_len;
 
-  // extended_master_secret is true if the master secret in this session was
+  // extended_master_secret is whether the master secret in this session was
   // generated using EMS and thus isn't vulnerable to the Triple Handshake
   // attack.
-  unsigned extended_master_secret:1;
+  bool extended_master_secret:1;
 
-  // peer_sha256_valid is non-zero if |peer_sha256| is valid.
-  unsigned peer_sha256_valid:1;  // Non-zero if peer_sha256 is valid
+  // peer_sha256_valid is whether |peer_sha256| is valid.
+  bool peer_sha256_valid:1;  // Non-zero if peer_sha256 is valid
 
   // not_resumable is used to indicate that session resumption is disallowed.
-  unsigned not_resumable:1;
+  bool not_resumable:1;
 
-  // ticket_age_add_valid is non-zero if |ticket_age_add| is valid.
-  unsigned ticket_age_add_valid:1;
+  // ticket_age_add_valid is whether |ticket_age_add| is valid.
+  bool ticket_age_add_valid:1;
 
-  // is_server is true if this session was created by a server.
-  unsigned is_server:1;
+  // is_server is whether this session was created by a server.
+  bool is_server:1;
 };